sparc64 address-congruence property

[pandora-kernel.git] / arch / sparc / mm / init_64.c

diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 6ff4d78..b4989f9 100644 (file)
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -1071,7 +1071,14 @@ static int __init grab_mblocks(struct mdesc_handle *md)
                m->size = *val;
                val = mdesc_get_property(md, node,
                                         "address-congruence-offset", NULL);
-               m->offset = *val;
+
+               /* The address-congruence-offset property is optional.
+                * Explicity zero it be identifty this.
+                */
+               if (val)
+                       m->offset = *val;
+               else
+                       m->offset = 0UL;
 
                numadbg("MBLOCK[%d]: base[%llx] size[%llx] offset[%llx]\n",
                        count - 1, m->base, m->size, m->offset);